Authors

Document Type

Article

Publication Date

2015

DOI

10.4085/1062-6050-49.3.49

Publication Title

Journal of Athletic Training

Volume

50

Issue

1

Pages

14-22

Abstract

Context: Insufficient hip and thigh strength may increase an athlete's susceptibility to injury. However, screening for strength deficits using isometric and isokinetic instrumentation may not be practical in all clinical scenarios.

Objective: To determine if functional performance tests are valid indicators of hip and thigh strength.

Intervention(s): During session 1, we measured isometric peak force and rate of force development for 8 lower extremity muscle groups, followed by an isometric endurance test. During session 2, participants performed functional performance tests.

Main Outcome Measure(s): Peak force, rate of force development, fatigue index, hop distance (or height), work (joules), and number of hops performed during the 30-second lateral-hop test were assessed. The r values were squared to calculate r2. We used Pearson correlations to evaluate the associations between functional performance and strength.